Hi to all members, does anyone know where the red/white factory positive wire that feeds into the back of the indicator stalk gets its power from (where it feeds back too) please? I had an indicator stalk issue that caused a spark (which I’ve now fixed) but since then I have a dead (immobilised) 996 (no cluster lights although windows and stereo and computer still works) An Auto electrician friend identified there was no power getting to the factory positive behind the indicator side and we are thinking it may go back to the immobiliser unit under the passenger seat (although there’s no red/white wire to be found but Porsche could’ve changed the colour en route to deter car thieves perhaps) ..I’m hoping someone knows how to fix without replacing the immobiliser unit and recoding keys etc ..any ideas guys/girls please ? Best wishes Nick

 

It goes back to the ignition lock mechanism. It also ties into the 80amp fuse labled as "engine electronics" this sits behind the hvac box on the fire wall right off the battery. I would say if the dme lights up that fuse is fine.


My guess would be replace the ignition. Its known to cause issues even without sparks.

If the health of the immobilizer is in question get in touch with ecudoctors in fl. Its $100 for a full diagnostic from them.

 

Thank you so much for your advice and reply that gives me something else to look at it before spending silly money in these difficult times. I couldn’t find the 80amp fuse in the front trunk by the battery or in the panel under the carpet behind the seats but it’s at least given my auto electrician friend a point to start and get the car running again ..supposed Europe road trip in 10days too !! Best wishes and thanks

 

The fusible links are located behind the carpet, passenger side footwell, all the way in and attached to the interior firewall.

 

Yea its interior to the car under the carpet behing the hvac box. Like i said i doubt its the issue because it feeds a ton of stuff. U can always get the Bentley manual too . It has all the scematics

Dont forget to go through all the fuses on the drivers side foot well panel.

 

You should be looking for this.
this is a picture I took when I removed the dashboard and AC evaporator, but you should be able to get to it with no issue.
if I remember correctly, you will need to disconnect the battery positive terminal that goes to the firewall, and remove the two nuts.
that will allow you to pull the fuse box into the car, and inspect it.
if you have a RHD, that might be located on the driver side.



this is the terminal I’m referring to (LHD car)

 

Thank you to all of you for offering your advice and help. I’ve plenty to look at again and I’ll post the results in case anyone else has similar issues in the future ..these threads are always handy to have a read when you’re struggling

 

Hello All, just an update on this issue I had. Zuffenhaus in the West Midlands (UK) determined that the reason I had cluster lights or ignition at all was a blown big fuse and burnt out wire situated behind the glove box (RHD car). So relatively cheap fix although all evidence pointed to an immobiliser short circuit where I may have had to replace the unit under the seat and recode keys etc thankfully avoided such things..and Porsche engineering of a fail safe was the solution. Many thanks to those who contributed and offered advice and now I can join the other 6 911’s in the convoy off to Le Mans in France and then the Porsche museum in Stuttgart (Germany) for a weeks road trip through glorious European roads ..best wishes and good health all

 

That sounds amazing. As they say, pics or it didn't happen! Drive safe!